x+3=X-y

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Solution for x+3=X-y equation: 


Simplifying
x + 3 = X + -1y

Reorder the terms:
3 + x = X + -1y

Solving
3 + x = X + -1y

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.
3 + -3 + x = X + -3 + -1y

Combine like terms: 3 + -3 = 0
0 + x = X + -3 + -1y
x = X + -3 + -1y

Reorder the terms:
x = -3 + X + -1y

Simplifying
x = -3 + X + -1y

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